In his new book, the economist Joseph Stiglitz estimates that the Iraq war will cost, in total, $3 trillion. The Greenwald site aims to illustrate the opportunity cost of the war -- other things we might have done with the money.

The site is populated with items from Amazon and other shopping sites -- ordinary items, things like the "Full House" box set and Oprah books -- but users can also add their own big-ticket things.

These are fascinating -- many are well-meaning, though more than a few betray the same kind of money-will-make-it-happen wrongheaded idealism that got us into Iraq in the first place (for instance, even spending $500 billion will not "replace all media with guaranteed truth only" -- that's just crazy talk.)